Flexible pipe coupling



Feb. 22,1944. 6;@ GRIGSBY I 2,342,192

= .FLEXIBIJE PIPE coUPLING .Filed March 28. 1941 2 Shee'lZS-Sl'ieell l r l l VW y @5* FLEXIBLE PIPE COUPLING Filed March 28, 1941 2 subas-sheet 2 Patented Feb. 22, 1944 ummm rirncoUruNG osu c. orlgsby, pesage. Mo.

Application March 28, 1941, Serial No.-385,635

s icl. 28s-.m

` ited to that environment.

Further objects and advantages of the invention will be apparent from the following detail description taken in connection with the accompanyins drawings, in which- Fig. l. is a side elevation of a valve partly in section employing a flexible conduit;

Fig. 2 is a vertical section on line 2 2, Fig. l;

Fig. 3 is a view partly in section showing one application of a coupling; and

Fig. 4 is a sectional view illustrating an application of the coupling.

The valve illustrated in Fls. l and 2 is a valve of the general type shown in my Patentv No. 2,212,733, issued August 27, 1940, and includes a exible conduit i and mechanical means for collapsing the conduit, including a, bottom clamp 2, a top clamp t, a yoke t connected to the bottom clamp, and a jack screw E with threads in one direction on the top portion and threads of opposite direction on the bottom portion, with follower nuts t and i, associated respectively with the yoke and top clamp. whereby upon rotation oi' the screw by a hand wheel t the yoke d and top clamp 3 will be moved toward or from each other simultaneously.

These mechanical elements are supported by a bracket t from a ring it which forms a part of the end coupling.

The conduit i comprises rubber reinforced by layers of fabric il about its periphery. The conduit has internally diametrically opposed grooves I 2, 90 removed from the point of contact between the conduit and the clamps and forming hinge lines. l

., and the sleeve I5 taken off in halves.

sleeve can be reassembled on the new conduit,

used herein is intended to include both natural and synthetic rubbers.

The coupllng'includes a sleeve I5, positioned about the conduit and adjacent the flange I 3. with its end abutting the ange and having internal circumferential grooves I6 to receive the ridges ill.

A riiig I0 engages an outwardly extending circumferential ange l1 on the sleeve and provides means whereby the coupling may be connected endwise with a second conduit. As shown in Figs. 1 and 4, the ring I0 has a circumferential iiange with holes therethrough to accommodate clamping bolts It. In the-embodiment shown ln Fig. 3, the ring is identied as Ita, and comprises an internally threaded nut to .engage an externally threaded ilange I9 on a pipe.

It will be apparent that the sleeve i5 and the ring I0 may be integral. provide for ready replacement of the conduit I, an arrangement is provided in which the sleeve it is split into two complementary sections held together by the ring I0. Thus, if replacement is desired the ring I0 may be loosened and removed the ring put in position and clamped in place. It will be seen, therefore, that with the split sleeve and separate ring the pipe of conduit section can be readily replaced without disturbing the remaining portion of the line.

In Fig. 3 e, particular construction is shown in which the conduit i is attached to a metal pipe 2d having screwed or welded to ita flange member lil. In the embodiment shown in Fig. 4 a connection is made between the conduit I and a pipe 2i having a rubber lining 22 and a welded-on ilange 23. In this case the lining is brought outwardly over the ends of the pipe forming an outwardly extending rubber flange 2d. Here the bolts It pass through the flange 2t and the ring It, thereby clamping together the out-turned rubber rianges. Gaskets or washers 25 are provided and limit the clearance between 4the end 4 of the pipe 2| and the end of the sleeve I5.

The valve which has been produced using a iiexible conduit oi rubber or its equivalent, and

with connections as illustrated and described, is particularly desirable in handling uids which are either abrasive or corrosive. It is of particular utility in milling ores, for the handling of slimes and. sands which would soon cut and destroy the parts of metal valves. It is also of value in the chemical industry where the chemicals handled are corrosive as to metals but are neu- However, in order to.

Then the trai as to rubber. As shown in Fig. 4, it may be connected to a typical rubber lined pipe so th'at no metal parts whatever are exposed to the action of the iiuids handled.

It will be obvious that the invention accomplishes its objects. Various changes may4 be made in the details of construction and opera-l tion, within'the scope of the appended claims, without departing from the spirit of this invention, and parts of the invention may be used without the whole.

I claim: 1. In a pipe coupling, the combination comprising a iexible rubber conduit having a circumferentiai iiange at its end and one or more circumferential ridges on its` periphery spaced from the ange, a sleeve about the conduit having its outer end abutting the flange and having one or more internal grooves receiving 'said' from the flange, said conduit being ot rubber with fabric reinforcement about its periphery and extending into the ilahge and outwardly therewith, a sleeve about the conduit having its outer end abutting the flange and having one or more internal grooves receiving said ridges, and a ring about and engaging thesleeve adapted for connection endwise with a second conduit, arranged whereby the ilange is clamped between the end of the sleeve and an annular face on said second conduit.

3. In a pipe coupling, the combination comprising a flexible conduit having a circumferential ange at its end and one or more circumferential ridges on its periphery spaced from the flange, a split sleeve about the coupling having its outer end abutting the flange, having one or more internal grooves receiving said ridges and having an outwardly extending iiange near its outer end, and a. ring about the sleeve engaging the inner edge of the flange on the sleeve and adapted for connection endwise with a second conduit, arranged whereby the flange on the end of the conduit is clamped between the end of the sleeve and an annular face on said second conduit.

GAIL G. GRIGSBY. 

